25cm3 of 0.1 mol dm-3 potassium hydroxide solution is put in a conical flask. Then a few drops of phenolphthalein are added and hence titrated with solution S. Question (I) and (ii)

the correct answer is:

a. formation of precipitation

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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